F.G.S. - Blog

Tempered Hole and Notch Locations

Minimum Glass Width: The minimum width of the product should be 8 times the thickness of the glass.

Edge Of Glass To Nearest Point of Hole: Glass less than 1/2" thick should not have holes located any closer than 1.5 times the thickness of the glass. Glass thicker than 1/2" should not have holes located any closer than 2 times the thickness of the glass.

Corner Of Glass To Nearest Point of Hole: Holes should not be located any closer than 6.5 times the thickness of the glass.

Dimension Of Holes: The minimum dimension of a hole should be at least 1/16" larger than the thickness of the glass. The maximum dimension of the hole should not be more than 1/3 the narrowest dimension of the piece.

Notches And Cutouts: All must have a fillet with radius equal to, or greater than the thickness of the glass.